The main aim of this study was to explore the difference in severity of depressive and anxiety symptoms and sleeping problems, as well as perception of stress experience, life satisfaction and achieved adulthood with a regard to the professional status of young people. Also, this study tried to determine the contribution of perception of stress experience, sleeping problems and achieved criteria of adulthood in addition to sex and professional status in the severity of depression and anxiety symptoms and life satisfaction. The study was conducted on the sample of 188 young male and 283 young female from Croatia, who were from 19 to 28 years old. One hundred and fifty two people were employed, 103 unemployed and 216 were college students and all of them completed online survey. Survey consisted of demographic data, Depression, Anxiety and Stress Scale, Pittsburgh Sleep Quality Index Questionnaire, Achieved Criteria for Adulthood Questionnaire and Life Satisfaction Scale. The results showed that there are significant differences in severity of depressive and anxiety symptoms, sleeping problems, stress experience, life satisfaction and achieved criteria of adulthood in view of professional status of young people. Unemployed young people and college students have more depression and anxiety symptoms, more sleeping problems and experience more stress than employed young people do. Also, unemployed young people and college students are not as satisfied with their life as employed young people are, and they achieve significantly less adulthood criteria than employed ones. Results showed that stress experience, sleeping problems and achieved adulthood criteria significantly explain severity of depression and anxiety symptoms and life satisfaction. Stress experience perception stands out as important variable in predicting depression and anxiety symptoms, when level of achieved adulthood criteria shows to be good at predicting life satisfaction.